Electric switch



C. E. ANDERSON.

-ELECTRIC SWITCH.

` APPLxcATloN FILED Nov. 8. 1921.

Patented Nov. 28, 1922.

APatented Nov. 28, 1922.

CARL VERIC ANDERSON, OF STRATFORD, CONNECTICUT. ASSIGNOR TO THEEBRYANTELECTRIC COMPANY, F BRIDGEPORT,

NECTICUT.

CONNECTICUT, A CORPORATION OF CON- ELECTRIC SWITCH.

l Application filed November 8, 1921. Serial No. 513,650.

To al? whom it muy conce/ai.'

a citizen of the United States of America, residing at Stratford, in thecounty ot' Fairfieldan'd State. of Connecticut, have invented certainnew and useful Improvements in Electric Switches, ot' which thefollowing is a specification.

My invention relates to electricl switches, andifparticularly to amomentary contact switch suitable tor operating relays or reinotlelycontrolled electromagnets, etc. The object ot the invention is toprovide a simple and efficient device ot' compact construction, havingcertain features ot' improvement in construction and operationhereinafter described or illustrated in the accompanying drawings, inwhich Fig. 1 is a 'plan of a switch in which my invention is embodied inone form;

Fig. 2 is a side elevation thereof;

Fig. 3 is a section on the line 3 3, Fig. 2; Fig. 1 is a section on theline 4 4, Fig. l; Fig. 5 is a section on the line 5 5, Fig. Ll,

Fig. 6 is a diagrammatic illustration the operation of the switch;-and

Fig. 7 is a perspective of one of the switch contacts.

In the forni here shown. the present switch comprises an insulating bodyformedby a pair of insulating blocks 10 and 1l arranged face to face andunited b v suitable through scii'ews 12 and 13. The screws take into abiaflcet'l/l, the legs of which are angled over theupjer end ottheswitch body and tapped to'eceive screws 15 by which the switch'car' rTinfr voke 1G is secured in oostion. The

latter is apertured at 17 to accommodate the thumb piece 18 ot' theswitch operating lever 19, which projects therethrough and through theface plate, not shown, into position for manual operation.

The blocks 1() and 11 are appropriately recessed on their juxtaposedfaces to afford a closed switch chamber 20. The switch contacts 21 and22 project into the lower portion of the switch chamber and areconnected to the'wire terminals 23 and 24, which are of the samepolarity. A third wire terminal 25, also mounted in the lower face ofthe block, is connected by the screw 26 to a strap 27 let into the outerface of the block 11 and connected at its opposite end by screw 28 tothe switch frame 29.

The switch frame is of U-shape, and is se-v Vcured in position withinthe switch chamber Be it known that l, (hunj Enit' ANDERSON,

by the screws 23 and 30, which pass through the block 1l and take intoone Vside ot' the switch frame. The bridging portion of the latter isapertui'ed at 31 to accommodate the switch lever 15)` which is arrangedbetween' the sides ot the frame. and is pivoted on the pin 32passingtherethrough. The lever is preferably forked and its legs arenotched at its lower end to receive the cross head 33 of' the switch pin3-1. At its opposite end, the pin passes through the end of the yokeV 35which straddles the switch frame and is pivoted on studs 36 outwardlyoffset from the side plates of the frame. To accommodate the oscillatingyoke 35, the blocks 10 and 11 are recessed at 37 and 38 on oppositesides ot the switch chamber, and the'sde plates of the frame 29 areshaped to the incline of the sides of the recesses 37 and 3S tocooperate with the latter, and forming stops which limit the throw ofthe yoke 35.

The operation ofthe switch will he read ily understood. The lever 13andyoke 35 forni a toggle, subject tothe action ofthe switch spring 39.which is confined between the crosshead 33 of the contact` pin 34 andtheV end of the oscillating yoke 35. Vhen the lever 19 is swung on itsaxis 32. the cross head 33 of the switch pin is moved across the axis ofoscillation 36 ot' the yoke thereby further 4stressing the spring 39 andcausing it to exert its effort against the 'yoke 35 in oppositedirection. The yoke is thus biased with a snap action across its are oftravel. lith the. straightening of the togl gle Vincident to thismotion, the contact pm 34 is extruded through the end of the yoke and asthe latter swings to its opposite position the pin 34 engages thecontact 21 or 22 with a wiping action. This effects a momentarycompletion ot the circuitbetween the terminal 25 and the terminal 2301*.24, thus opera-ting the remote control device in a manner wellunderstood in the art. 1

As will be observed from the diagram (Fig. 6), the arcs described by theend of the pin 34 intersect .at a point outside the area of thel switchcontacts 21 and 22, the latter being appropriately shaped to prevent thecontact pin 34 from engaging bot-h of the contacts onits travel in onedirect-ion. Thus, itis possible to arrange two distinct remote controldevices in the two circuits from the terminals 23 and 24, each having acommon connect-ion to the terminal 25. If a ilo single remote controldevice is to be operated, a single switch contact may replace thecontacts 21 and 22, being located at the point 40 at which the arcs oftravel of the contact pin 34 intersects.

y Various modifications in detailof construction and arrangement ofparts will readily occur to those dealing with the problem, without,however, departing from what 3. In an electric switch, a switch frame,

means for establishing constant electrical 7 connection therewith, aspring toggle mech- 'anism mounted in the frame and comprising a memberbiased on kthe opera-tion of the toggle, in combination witha contactadapted to be momentarily engaged by said member in the course of itstravel following the operation of the toggle.

4. In an electric switch, a pair of switch contacts of the samepolarity, a current-carrying toggle comprising a-member ,adapted tolengage one or-the other of said contact-s of the same polarity, withmomentary wiping contact on the operation of the toggle.

5. In an electric switch, a switch frame,

toggle mechanism mounted therein comprising an operating lever, anoscillating member, a toggle spring interposed between the lever andoscillating member, and a guide pinA therefor engaged by said switchlever and oscillating member, and a contact momentarily engaged by saidspring guide pin with a wiping action on the operation of the. toggle. f

6. In an electric switch, an insulating bodyk comprising a pair ofjuxtaposed blocks of insulating material recessed on their meeting facesto form a switch chamber, wire terminals 'arranged at the lower end ofthe switch block, associated contacts projecting therefrom into theswitch chamber, switch mechanism arranged in the chamber,

and an operating lever therefor extending above the upper end of theinsulating body,

a switch supporting frame mounted in the switch chamber, and meanspiercing the side of the insulating body for securing said.

frame in position.

7. In an electric switch, an insulatn body comprising a pair ofinsulating blocks recessed on their V'meeting faces to form La switchchamber, a switch mechanism arranged therein and mounted on one of saidblocks, wire terminals mounted on said block outside the switch chamberand exposed for wlring, switch contacts projecting therefrom into theswitch chamber, switch operating means projecting from theend of thebody opposite the wiring terminals, a supporting bracket mounted on theside of the body, and screws piercing both blocks of said body andengaging said supporting bracket to hold the parts assembled.

8. In an yelectric switch, an insulatingv body comprising a pair ofinsulating blocks recessed on their meeting faces to afford a switchchamber, transversely extending screws for uniting said blocks, abracket arranged at one side of the body and engaged by said screws,said bracket being angledover the top of the insulating body and adaptedto receive screws for securing thereto a supporting yoke.

In testimony whereof I have signed my name to this specification. i

CARL ERIC ANDERSON.

